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Original file line number | Diff line number | Diff line change |
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/* | ||
* netlink/route/link/ipvlan.h IPVLAN interface | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation version 2.1 | ||
* of the License. | ||
* | ||
* Copyright (c) 2015 Cong Wang <cwang@twopensource.com> | ||
*/ | ||
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#ifndef NETLINK_LINK_IPVLAN_H_ | ||
#define NETLINK_LINK_IPVLAN_H_ | ||
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#include <netlink/netlink.h> | ||
#include <netlink/route/link.h> | ||
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#ifdef __cplusplus | ||
extern "C" { | ||
#endif | ||
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extern struct rtnl_link *rtnl_link_ipvlan_alloc(void); | ||
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extern int rtnl_link_is_ipvlan(struct rtnl_link *); | ||
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extern char * rtnl_link_ipvlan_mode2str(int, char *, size_t); | ||
extern int rtnl_link_ipvlan_str2mode(const char *); | ||
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extern int rtnl_link_ipvlan_set_mode(struct rtnl_link *, | ||
uint16_t); | ||
extern uint16_t rtnl_link_ipvlan_get_mode(struct rtnl_link *); | ||
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#ifdef __cplusplus | ||
} | ||
#endif | ||
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#endif |
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Original file line number | Diff line number | Diff line change |
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/* | ||
* lib/route/link/ipvlan.c IPVLAN Link Info | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation version 2.1 | ||
* of the License. | ||
* | ||
* Copyright (c) 2015 Cong Wang <cwang@twopensource.com> | ||
*/ | ||
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/** | ||
* @ingroup link | ||
* @defgroup ipvlan IPVLAN | ||
* IP-based Virtual LAN link module | ||
* | ||
* @details | ||
* \b Link Type Name: "ipvlan" | ||
* | ||
* @route_doc{link_ipvlan, IPVLAN Documentation} | ||
* | ||
* @{ | ||
*/ | ||
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#include <netlink-private/netlink.h> | ||
#include <netlink/netlink.h> | ||
#include <netlink/attr.h> | ||
#include <netlink/utils.h> | ||
#include <netlink/object.h> | ||
#include <netlink/route/rtnl.h> | ||
#include <netlink-private/route/link/api.h> | ||
#include <netlink/route/link/ipvlan.h> | ||
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#include <linux/if_link.h> | ||
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/** @cond SKIP */ | ||
#define IPVLAN_HAS_MODE (1<<0) | ||
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struct ipvlan_info | ||
{ | ||
uint16_t ipi_mode; | ||
uint32_t ipi_mask; | ||
}; | ||
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/** @endcond */ | ||
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static struct nla_policy ipvlan_policy[IFLA_IPVLAN_MAX+1] = { | ||
[IFLA_IPVLAN_MODE] = { .type = NLA_U16 }, | ||
}; | ||
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static int ipvlan_alloc(struct rtnl_link *link) | ||
{ | ||
struct ipvlan_info *ipi; | ||
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if (link->l_info) | ||
memset(link->l_info, 0, sizeof(*ipi)); | ||
else { | ||
if ((ipi = calloc(1, sizeof(*ipi))) == NULL) | ||
return -NLE_NOMEM; | ||
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link->l_info = ipi; | ||
} | ||
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return 0; | ||
} | ||
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static int ipvlan_parse(struct rtnl_link *link, struct nlattr *data, | ||
struct nlattr *xstats) | ||
{ | ||
struct nlattr *tb[IFLA_IPVLAN_MAX+1]; | ||
struct ipvlan_info *ipi; | ||
int err; | ||
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NL_DBG(3, "Parsing IPVLAN link info"); | ||
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if ((err = nla_parse_nested(tb, IFLA_IPVLAN_MAX, data, ipvlan_policy)) < 0) | ||
goto errout; | ||
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if ((err = ipvlan_alloc(link)) < 0) | ||
goto errout; | ||
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ipi = link->l_info; | ||
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if (tb[IFLA_IPVLAN_MODE]) { | ||
ipi->ipi_mode = nla_get_u16(tb[IFLA_IPVLAN_MODE]); | ||
ipi->ipi_mask |= IPVLAN_HAS_MODE; | ||
} | ||
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err = 0; | ||
errout: | ||
return err; | ||
} | ||
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static void ipvlan_free(struct rtnl_link *link) | ||
{ | ||
free(link->l_info); | ||
link->l_info = NULL; | ||
} | ||
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static void ipvlan_dump(struct rtnl_link *link, struct nl_dump_params *p) | ||
{ | ||
char buf[64]; | ||
struct ipvlan_info *ipi = link->l_info; | ||
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if (ipi->ipi_mask & IPVLAN_HAS_MODE) { | ||
rtnl_link_ipvlan_mode2str(ipi->ipi_mode, buf, sizeof(buf)); | ||
nl_dump(p, "ipvlan-mode %s", buf); | ||
} | ||
} | ||
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static int ipvlan_clone(struct rtnl_link *dst, struct rtnl_link *src) | ||
{ | ||
struct ipvlan_info *vdst, *vsrc = src->l_info; | ||
int err; | ||
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dst->l_info = NULL; | ||
if ((err = rtnl_link_set_type(dst, "ipvlan")) < 0) | ||
return err; | ||
vdst = dst->l_info; | ||
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if (!vdst || !vsrc) | ||
return -NLE_NOMEM; | ||
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memcpy(vdst, vsrc, sizeof(struct ipvlan_info)); | ||
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return 0; | ||
} | ||
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static int ipvlan_put_attrs(struct nl_msg *msg, struct rtnl_link *link) | ||
{ | ||
struct ipvlan_info *ipi = link->l_info; | ||
struct nlattr *data; | ||
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if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) | ||
return -NLE_MSGSIZE; | ||
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if (ipi->ipi_mask & IPVLAN_HAS_MODE) | ||
NLA_PUT_U16(msg, IFLA_IPVLAN_MODE, ipi->ipi_mode); | ||
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nla_nest_end(msg, data); | ||
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nla_put_failure: | ||
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return 0; | ||
} | ||
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static struct rtnl_link_info_ops ipvlan_info_ops = { | ||
.io_name = "ipvlan", | ||
.io_alloc = ipvlan_alloc, | ||
.io_parse = ipvlan_parse, | ||
.io_dump = { | ||
[NL_DUMP_LINE] = ipvlan_dump, | ||
[NL_DUMP_DETAILS] = ipvlan_dump, | ||
}, | ||
.io_clone = ipvlan_clone, | ||
.io_put_attrs = ipvlan_put_attrs, | ||
.io_free = ipvlan_free, | ||
}; | ||
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/** @cond SKIP */ | ||
#define IS_IPVLAN_LINK_ASSERT(link) \ | ||
if ((link)->l_info_ops != &ipvlan_info_ops) { \ | ||
APPBUG("Link is not a ipvlan link. set type \"ipvlan\" first."); \ | ||
return -NLE_OPNOTSUPP; \ | ||
} | ||
/** @endcond */ | ||
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/** | ||
* @name IPVLAN Object | ||
* @{ | ||
*/ | ||
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/** | ||
* Allocate link object of type IPVLAN | ||
* | ||
* @return Allocated link object or NULL. | ||
*/ | ||
struct rtnl_link *rtnl_link_ipvlan_alloc(void) | ||
{ | ||
struct rtnl_link *link; | ||
int err; | ||
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if (!(link = rtnl_link_alloc())) | ||
return NULL; | ||
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if ((err = rtnl_link_set_type(link, "ipvlan")) < 0) { | ||
rtnl_link_put(link); | ||
return NULL; | ||
} | ||
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return link; | ||
} | ||
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/** | ||
* Check if link is a IPVLAN link | ||
* @arg link Link object | ||
* | ||
* @return True if link is a IPVLAN link, otherwise false is returned. | ||
*/ | ||
int rtnl_link_is_ipvlan(struct rtnl_link *link) | ||
{ | ||
return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "ipvlan"); | ||
} | ||
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/** | ||
* Set IPVLAN MODE | ||
* @arg link Link object | ||
* @arg mode IPVLAN mode | ||
* | ||
* @return 0 on success or a negative error code | ||
*/ | ||
int rtnl_link_ipvlan_set_mode(struct rtnl_link *link, uint16_t mode) | ||
{ | ||
struct ipvlan_info *ipi = link->l_info; | ||
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IS_IPVLAN_LINK_ASSERT(link); | ||
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if (mode != IPVLAN_MODE_L2 && mode != IPVLAN_MODE_L3) | ||
return -NLE_INVAL; | ||
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ipi->ipi_mode = mode; | ||
ipi->ipi_mask |= IPVLAN_HAS_MODE; | ||
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return 0; | ||
} | ||
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/** | ||
* Get IPVLAN Mode | ||
* @arg link Link object | ||
* | ||
* @return IPVLAN mode, 0 if not set or a negative error code. | ||
*/ | ||
uint16_t rtnl_link_ipvlan_get_mode(struct rtnl_link *link) | ||
{ | ||
struct ipvlan_info *ipi = link->l_info; | ||
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IS_IPVLAN_LINK_ASSERT(link); | ||
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if (ipi->ipi_mask & IPVLAN_HAS_MODE) | ||
return ipi->ipi_mode; | ||
else | ||
return 0; | ||
} | ||
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/** @} */ | ||
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static const struct trans_tbl ipvlan_modes[] = { | ||
__ADD(IPVLAN_MODE_L2, l2), | ||
__ADD(IPVLAN_MODE_L3, l3), | ||
}; | ||
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/** | ||
* @name Mode Translation | ||
* @{ | ||
*/ | ||
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char *rtnl_link_ipvlan_mode2str(int mode, char *buf, size_t len) | ||
{ | ||
return __type2str(mode, buf, len, ipvlan_modes, ARRAY_SIZE(ipvlan_modes)); | ||
} | ||
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int rtnl_link_ipvlan_str2mode(const char *name) | ||
{ | ||
return __str2type(name, ipvlan_modes, ARRAY_SIZE(ipvlan_modes)); | ||
} | ||
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/** @} */ | ||
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static void __init ipvlan_init(void) | ||
{ | ||
rtnl_link_register_info(&ipvlan_info_ops); | ||
} | ||
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static void __exit ipvlan_exit(void) | ||
{ | ||
rtnl_link_unregister_info(&ipvlan_info_ops); | ||
} | ||
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/** @} */ |
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